public class TexasInstruments implements Calculator{
	private int totalAdd;
	private int totalSubtract;

	public void Add(int number1, int number2){
		totalAdd = number1 + number2;
	}

    	public void Subtract(int number1, int number2){
		totalSubtract = number1 - number2;
	}
	
	public int getTotalAdd(){
		return totalAdd;
	}
	
	public int getTotalSubtract(){
		return totalSubtract;
	}
}